From 3f27e151468f187f05f9cf8361246e8506a0d369 Mon Sep 17 00:00:00 2001
From: Fotis Koutoulakis <fotis.koutoulakis@diffblue.com>
Date: Wed, 11 Nov 2020 14:00:07 +0000
Subject: [PATCH 1/2] Add a linux+clang+make github actions pull request check
 job.

This replaces a codebuild job that had not been ported yet,
so that codebuild can be safely deactivated as a CI provider,
having all the configurations ported so far.
---
 .github/workflows/pull-request-checks.yaml | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/.github/workflows/pull-request-checks.yaml b/.github/workflows/pull-request-checks.yaml
index a3a4ddf7316..5edd6b480c3 100644
--- a/.github/workflows/pull-request-checks.yaml
+++ b/.github/workflows/pull-request-checks.yaml
@@ -59,6 +59,45 @@ jobs:
           env PATH=$PATH:`pwd`/src/solvers make -C regression/cbmc test-cprover-smt2
           make -C jbmc/regression test-parallel JOBS=2
 
+  check-ubuntu-20_04-make-clang:
+    runs-on: ubuntu-20.04
+    env:
+      CC: "/usr/bin/clang"
+      CXX: "/usr/bin/clang++"
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Fetch dependencies
+        env:
+          # This is needed in addition to -yq to prevent apt-get from asking for
+          # user input
+          DEBIAN_FRONTEND: noninteractive
+        run: |
+          sudo apt-get update
+          sudo apt-get install --no-install-recommends -yq clang-10 clang++-10 gdb maven jq flex bison libxml2-utils cpanminus
+          make -C src minisat2-download
+          cpanm Thread::Pool::Simple
+      - name: Build with make
+        run: |
+          make -C src       -j2
+          make -C unit      -j2
+          make -C jbmc/src  -j2
+          make -C jbmc/unit -j2
+      - name: Run unit tests
+        run: |
+          make -C unit      test
+          make -C jbmc/unit test
+      - name: Running expected failure unit tests
+        run: |
+          make TAGS="[!shouldfail]" -C unit test
+          make TAGS="[!shouldfail]" -C jbmc/unit test
+      - name: Run regression tests
+        run: |
+          make -C regression test-parallel JOBS=2
+          make -C regression/cbmc test-paths-lifo
+          env PATH=$PATH:`pwd`/src/solvers make -C regression/cbmc test-cprover-smt2
+          make -C jbmc/regression test-parallel JOBS=2 
   check-ubuntu-20_04-cmake-gcc:
     runs-on: ubuntu-20.04
     steps:

From 81ecf05baee6d776646be80252c00d291682eca2 Mon Sep 17 00:00:00 2001
From: Fotis Koutoulakis <fotis.koutoulakis@gmail.com>
Date: Wed, 17 Feb 2021 14:35:34 +0000
Subject: [PATCH 2/2] Enable ccache for the linux*make*clang job.

---
 .github/workflows/pull-request-checks.yaml | 27 ++++++++++++++++++----
 1 file changed, 22 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/pull-request-checks.yaml b/.github/workflows/pull-request-checks.yaml
index 5edd6b480c3..ddd699c7658 100644
--- a/.github/workflows/pull-request-checks.yaml
+++ b/.github/workflows/pull-request-checks.yaml
@@ -62,8 +62,8 @@ jobs:
   check-ubuntu-20_04-make-clang:
     runs-on: ubuntu-20.04
     env:
-      CC: "/usr/bin/clang"
-      CXX: "/usr/bin/clang++"
+      CC: "ccache /usr/bin/clang"
+      CXX: "ccache /usr/bin/clang++"
     steps:
       - uses: actions/checkout@v2
         with:
@@ -75,20 +75,36 @@ jobs:
           DEBIAN_FRONTEND: noninteractive
         run: |
           sudo apt-get update
-          sudo apt-get install --no-install-recommends -yq clang-10 clang++-10 gdb maven jq flex bison libxml2-utils cpanminus
+          sudo apt-get install --no-install-recommends -yq clang-10 clang++-10 gdb maven jq flex bison libxml2-utils cpanminus ccache
           make -C src minisat2-download
           cpanm Thread::Pool::Simple
+      - name: Prepare ccache
+        uses: actions/cache@v2
+        with:
+          path: .ccache
+          key: ${{ runner.os }}-20.04-make-clang-${{ github.ref }}-${{ github.sha }}-PR
+          restore-keys: |
+            ${{ runner.os }}-20.04-make-clang-${{ github.ref }}
+            ${{ runner.os }}-20.04-make-clang
+      - name: ccache environment
+        run: |
+          echo "CCACHE_BASEDIR=$PWD" >> $GITHUB_ENV
+          echo "CCACHE_DIR=$PWD/.ccache" >> $GITHUB_ENV
+      - name: Zero ccache stats and limit in size
+        run: ccache -z --max-size=500M
       - name: Build with make
         run: |
           make -C src       -j2
           make -C unit      -j2
           make -C jbmc/src  -j2
           make -C jbmc/unit -j2
+      - name: Print ccache stats
+        run: ccache -s
       - name: Run unit tests
         run: |
           make -C unit      test
           make -C jbmc/unit test
-      - name: Running expected failure unit tests
+      - name: Run expected failure unit tests
         run: |
           make TAGS="[!shouldfail]" -C unit test
           make TAGS="[!shouldfail]" -C jbmc/unit test
@@ -97,7 +113,8 @@ jobs:
           make -C regression test-parallel JOBS=2
           make -C regression/cbmc test-paths-lifo
           env PATH=$PATH:`pwd`/src/solvers make -C regression/cbmc test-cprover-smt2
-          make -C jbmc/regression test-parallel JOBS=2 
+          make -C jbmc/regression test-parallel JOBS=2
+
   check-ubuntu-20_04-cmake-gcc:
     runs-on: ubuntu-20.04
     steps: